PICTURED: Hospital worker, 51, killed by runaway steel cylinder that rolled out ... trends now

The hospital worker who was tragically killed by a runaway steel cylinder in Pennsylvania on Friday morning has been identified. 

Aleia Lopez, 51, died after she walked outside the Petersen Events Center South Oakland, Pittsburgh when she was hit in the head by the heavy object.

The mother-of-three suffered a serious head injury and was lying on the street as bystanders tried to save her life. Lopez was pronounced dead at the scene. 

Her mother, Melanie Hall, said: 'Aleia was a light in the lives of all that knew her and the rock for her three children Angelia, Leilani, and Ethan.' 

The scene of the accident took place within a two minute walk of her job, where she worked as an Executive assistant to the president at UPMC Western Psychiatric Hospital.   

Pittsburgh Public Safety Public Information Officer Emily Bourne said that the heavy cylinder somehow came loose, broke through a chain-link fence and rolled down the hill from the construction site before it struck Lopez on the sidewalk. 

'Obviously there is a construction site here, a large, metal steel drum that escaped from the construction site, rolled down the hill, and broke through a section of fencing,' she said. 

'And the woman was on the sidewalk, street area when she was struck by the runway piece of metal.'

One of the bystanders attempted to give Lopez CPR but she was pronounced dead by the time paramedics arrived at the scene. 

The construction was part of a $240million project for the University of Pittsburgh, the Pittsburgh Post Gazette reported.